ARTIFICIAL OLFACTORY SENSING SYSTEM

摘要

An artificial olfactory sensing system is provided comprising a sensor array (10) including volume-change sensors (12) and mass-change sensors (14), the responses of which sensors may be combined to provide an output characteristic of the molecular density of the analyte. Vapour to be analysed is passed into a sensor chamber (32) containing multiple chemoresistor volume-change sensors (12) and quartz microbalance crystal sensors (14). The responses are analysed by computer (30), as hardware or a neural network. The chemoresistors (12) are fabricated from a non-conductive polymer doped into conductive carbon black, as multifingered interdigitated electrodes. Also described is a system and method for detecting an analyte in a fluid.